feat: add typing mode controls

src/config/types.ts

@@ -1,4 +1,5 @@
 export type ReplyMode = "text" | "command";
+export type TypingMode = "never" | "instant" | "thinking" | "message";
 export type SessionScope = "per-sender" | "global";
 export type ReplyToMode = "off" | "first" | "all";
 export type GroupPolicy = "open" | "disabled" | "allowlist";
@@ -964,6 +965,8 @@ export type ClawdbotConfig = {
     /** Max inbound media size in MB for agent-visible attachments (text note or future image attach). */
     mediaMaxMb?: number;
     typingIntervalSeconds?: number;
+    /** Typing indicator start mode (never|instant|thinking|message). */
+    typingMode?: TypingMode;
     /** Periodic background heartbeat runs. */
     heartbeat?: {
       /** Heartbeat interval (duration string, default unit: minutes; default: 30m). */

src/config/zod-schema.ts

@@ -595,6 +595,14 @@ export const ClawdbotSchema = z.object({
       timeoutSeconds: z.number().int().positive().optional(),
       mediaMaxMb: z.number().positive().optional(),
       typingIntervalSeconds: z.number().int().positive().optional(),
+      typingMode: z
+        .union([
+          z.literal("never"),
+          z.literal("instant"),
+          z.literal("thinking"),
+          z.literal("message"),
+        ])
+        .optional(),
       heartbeat: HeartbeatSchema,
       maxConcurrent: z.number().int().positive().optional(),
       subagents: z